Kapton alternatives?

[Adam Oxford]

Hi all,

I'm after a bit of advice - I'm just finishing off my Prusa (at last) and wiring up the J-Head (purchased from the awesome openhardware guys). Is there any alternative to Kapton tape for insulating the components on the nozzle? I've got zero experience with high temperature electronics, but also struggling to find Kapton (and interested in cheaper options if there are any). I'm fairly sure using regular insulating tape would be a bad idea attached to the nozzle, but would something like that work if the wires were wrapped and held away from the brass?

Adam

[Peter van der Walt (Gmail)]

RS (za.rs-online.com) has (usually local) else if you can live with a 6 week wait: dx.com

Peter

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[Peter van der Walt (Gmail)]

Pressed send before i was done lol

-  Insulation tape will never work.  Heat rising from print, from heatbed, plus the resistor leads get hot all the way to the tip, some of the wire too.  Kapton pretty much the only option. 

And you need a roll anyway, regular maintenance, patching printbed, etc - so dont think a 33m roll is a waste if you need 2m for the hotend max

[Devin Pearson]

Try AMT Composites

http://www.amtcomposites.co.za/products/vacuum-bag-infusion-consumables/tapes/poly1-tape

R226 excl vat and they got stock. they are located by the airport

[Peter van der Walt (Gmail)]

Which width is the R226? 50mm if yes then thats not bad

Peter

[Quentin Harley]

Its 25mm tape

[Adam Oxford]

Cheers all, will put an order in with RS. Seems like the sensible thing to do. 

[Quentin Harley]

Rs too expensive!

I got a roll at composites for third of rs price

Sent from my iPad

On 04 May 2013, at 18:06, Adam Oxford <thecu...@gmail.com> wrote:

Cheers all, will put an order in with RS. Seems like the sensible thing to do. 

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[Gert van den Berg]

ManTech also have some...

http://www.mantech.co.za/ProductInfo.aspx?Item=72M2477

In some places, PTFE sleeving makes sense, but you'll still need some tape.... (PTFE heatshrink also exist...)

For a print surface, several alternatives exists... From wood glue solutions, PET / Polyester tape (for any tape used for ABS, ensure that it has a HIGH temperature rating...) (Silicone adhesive...), hair spray, etc...

Some RS links:

PTFE sleeves: http://goo.gl/xAx39

PTFE heatshrink: http://goo.gl/QztjI

Non-messy high-temp cable: http://goo.gl/TbU3y

Other high-temp cable: http://goo.gl/eSSgB

Tapes to try as print surfaces: http://goo.gl/8O5bU (PET and Kapton) (PET tapes also found elsewhere.... Kapton - see below...)

Kapton tape: 

Look under insulation tape, try search for high temp ratings... Also search for these 3M parts (paramters are unfilled in many cases...): 5413, 5419, SCOTCH 92, 

Hi-Bond HB830

Random note:

For the heater resistor, I recommend attaching it using a mechanism similar to this: http://www.makergear.com/pages/stepper-plastruder-instructions-heatcore (for a resistor, just using femal crimp pins work fine...) It keeps it from self-desoldering...

Gert

[Quentin Harley]

Did you get the Kapton through RS yet?

If not, don't!

you can get a roll of superwide 33m at fabric8

http://www.fabric8.co.za/p4201/Kapton-Tape.aspx

Just leave a roll for me please... 

[Adam Oxford]

That's awesome - I mailed them the other day to see when the shop was going back online. Now I know why they didn't reply! :)

[Quentin Harley]

All out already apparently...

Check out the filament pricing though!

Sent via my BlackBerry

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From: Adam Oxford <thecu...@gmail.com>

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Date: Fri, 10 May 2013 05:14:46 -0700 (PDT)

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Subject: Re: [house4hack] Kapton alternatives?

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